A man whose son is among six dead in a shooting in California has blamed politicians and the gun lobby, asking in an emotional and at times angry speech: "When will this insanity stop?"
Richard Martinez choked up several times as he paid tribute to his son who was killed on Friday when a gunman opened fire in a bustling California college town - the latest armed massacre in the United States and one likely to trigger more passionate debate about gun rights.
Californian gunman's killing spree
Police have confirmed Elliot Rodger, the son of a Hollywood film director, Peter Rodger, was the gunman involved in a drive by shooting in Santa Barbara, after he stabbed and killed three people near his apartment.
"My son's name was Christopher Ross Martinez, he was 20 years old and he died last night," Mr Martinez told reporters on Saturday, his face contorted with despair and rage.
"Our family has a message for every parent out there: you don't think it'll happen to your child until it does," he said, reading from a family statement.
"Chris was a really great kid, ask anyone who knew him. His death has left our family lost and broken."
His voice shaking with emotion, Mr Martinez rounded on politicians and the powerful National Rifle Association.
"Why did Chris die? Chris died because of craven, irresponsible politicians and the NRA," he said, raising his voice.
"They talk about gun rights. What about Chris's right to live? When will this insanity stop? When will enough people say stop this madness? We don't have to live like this.
"Too many have died. We should say to ourselves: 'Not one more.'
"Thank you, that's it," he added, punching the air.
Hunger Games assistant director's son the suspect
Peter Rodger, an assistant director of the 2012 Hollywood blockbuster The Hunger Games, believes the attacker was his 22-year-old son Elliot, lawyer Alan Shifman told reporters separately, although that was not immediately confirmed by police.
At least seven people were injured and the suspect also died during the drive-by shooting in Isla Vista, near the campus of the University of California Santa Barbara on Friday.
It was unclear whether the fatal shot was self-inflicted or delivered by police.
On the eve of the Memorial Day holiday weekend, the gunman sprayed bullets from his black BMW at pedestrians at multiple locations in the small oceanfront town.
"The problem with an incident like this is it's obviously the work of a madman," Santa Barbara County Sheriff Bill Brown told a news conference.
"We have obtained and we are currently analysing both written and videotaped evidence that suggests that this atrocity was a premeditated mass murder."
Authorities said there were nine separate crime scenes in what was a "chaotic" situation.
Mr Shifman said Elliot Rodger had been diagnosed as being a "highly functional Asperger's syndrome child" and was being treated by "multiple" professionals.
Police are investigating a video entitled Retribution apparently posted on YouTube by Rodger in which a man sitting in a car rants about women who rejected and ignored him for the past eight years, vowing to "punish you all for it".
California shooting victim's father: 'When will this insanity stop'
The father of Christopher Martinez delivers emotional remarks to the media after his son was one of six victims killed by a drive-by shooter in a California college town.
Ambulances and police cars swarmed the streets after the shooting.
Andrew Jun, a third-year economics and accounting student, said the situation was "pretty surreal".
"It's unbelievable that this kind of thing can happen," he said.
Other witnesses said they initially mistook the gunshots for fireworks or firecrackers.
Sienna Schwartz, her voice breaking, recalled how she came face-to-face with the gunman.
At first, she mistook the attacker's "little black pistol" for an airsoft gun.
"I turned around, and I started walking the other way. He shot, and I felt like - I just felt, like, the wind pass right by my face," Ms Schwartz told CNN as she choked back tears.
By grisly coincidence, in 2001, the son of Ally McBeal and The Wire television series director Daniel Attias ran down four pedestrians with his car on a crowded street just a block away from the scene of Friday's assault.
Witnesses said that part-time college student David Attias got out of the car after his deed and shouted "I am the angel of death."
He was ruled insane and locked up in a state hospital after being initially convicted of second-degree murder.
Authorities, who say Friday's gunman acted alone but have not released details on a possible motive, are investigating the YouTube video.
In it, the man believed to be Rodger speaks of a "day of retribution" for his life of "loneliness, rejection and unfulfilled desires".
"I will slaughter every single spoiled, stuck-up blonde slut I see inside there. All those girls that I've desired so much, they have all rejected me and looked down upon me as an inferior man," he says.
When officers approached him, the suspect "was dead of an apparent gunshot wound to the head," Sheriff Brown said.
Police said they recovered a handgun from the car.